@skeletion-background: #f3f3f3;

.entrance {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  .item {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    width: 20%;
    max-width: 20vw;
    margin-top: 3vw;
    .circle {
      width: 15vw;
      height: 15vw;
      border-radius: 100%;
      background: @skeletion-background;
    }
    .desc {
      margin-top: 2vw;
      width: 10vw;
      height: 2.5vw;
      background: @skeletion-background
    }
  }
}

.row {
  display: flex;
  padding: 4vw 3vw;
  .left {
    width: 20vw;
    height: 20vw;
    background: @skeletion-background;
  }
  .right {
    width: 70vw;
    .desc {
      height: 2.5vw;
      background: linear-gradient(90deg, #f3f3f3 8%, #eee 18%, #f3f3f3 33%);
      margin: 2vw;
      animation: progress 2s linear infinite;
    }
    .desc:nth-child(1) {
      width: 100%;
    }
    .desc:nth-child(2) {
      width: 90%;
    }
    .desc:nth-child(3) {
      width: 80%;
    }
    .desc:nth-child(4) {
      width: 90%;
    }
  }
}

@keyframes progress {
  from {
    background-position: -400px 0;
  }
  to {
    background-position: 400px 0;
  }
}
